Happy Ria, birthday girl, sweet 16yo, bright smile, sparkling eyes, curly brown hair, pink bow clip, minimal makeup, white tank top, short denim skirt, bare feet, holding a colorful bouquet, blowing out candles, festive balloons, streamers, confetti, sunny backyard, flower garden, wooden picnic table, surrounded by friends, warm sunlight, shallow depth of field, vibrant colors, playful atmosphere.